package whf.framework.service;

import java.util.List;

import whf.framework.exception.FindException;

/**
 * @author wanghaifeng
 *
 */
public interface TreeService<T> {
	/**
	 * @param parent
	 * @return if parent is null return all 1 level menuitems
	 */
	public List<T> findChildren(T parent, String queryString) throws FindException;
}
